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White light interferometry to characterize the hydrogel contact lens surface

Bibliographic Details
Main Author: Giraldez, Maria J.
Publication Date: 2010
Other Authors: García-Resúa, Carlos, Lira, Madalena, Oliveira, M. Elisabete, Yebra-Pimentel Vilar, Eva
Format: Article
Language: eng
Source: Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
Download full: http://hdl.handle.net/1822/13775
Summary: Uncorrected proof
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network_name_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
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spelling White light interferometry to characterize the hydrogel contact lens surfaceContact lensesHydrogelsSurface characterizationSurface roughnessTopographyWhite light optical profilingScience & TechnologyUncorrected proofPurpose: The aim of this study was to characterize, qualitatively and quantitatively, the surface morphology of four unworn conventional hydrogel contact lenses (Omafilcon, Hioxifilcon-based, Nefilcon A and Ocufilcon B) by White Light Optical Profiling (WLOP). WLOP is an ideal technique for sampling larger areas as well as for higher measurement speed compared with other topography techniques used in contact lens studies. Methods: Surface roughness was assessed by WLOP in the Vertical Scanning Mode, with a Wyko NT1100, which is a non-contact optical profiling system that provides high vertical resolution. Representative roughness parameters, the Average Roughness (Ra), Root-mean-square Roughness (Rms), and Maximum Roughness (Rmax), for areas of 625, 2500, 10829 and 67 646 lm2 were calculated. Results: Higher Ra, Rms and Rmax values were obtained for larger areas in all lenses. Daily disposable contact lenses (Nefilcon A and Ocufilcon B) presented the highest Ra, Rms and Rmax values, the larger changes in these parameters becoming apparent with the increase in the measured area. Differences between lenses were less obvious when data from 625 and 2500 lm2 area were compared. Conclusions: Daily disposable contact lenses showed the highest roughness surface. Analyzing larger areas might be adequate to detect differences between lenses in terms of surface characteristics, which may not be so obvious if smaller areas are studied.Wiley-BlackwellUniversidade do MinhoGiraldez, Maria J.García-Resúa, CarlosLira, MadalenaOliveira, M. ElisabeteYebra-Pimentel Vilar, Eva2010-05-012010-05-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/13775eng0275-540810.1111/j.1475-1313.2010.00712.x20444136http://www.ingentaconnect.com/content/bsc/opo/2010/00000030/00000003/art00009?token=00461252d45c5f3b3b47462148743b3e70557b2f2a6c4f582a2f4876753375686f4961info:eu-repo/semantics/openAccessreponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiainstacron:RCAAP2024-05-11T06:48:59Zoai:repositorium.sdum.uminho.pt:1822/13775Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireinfo@rcaap.ptopendoar:https://opendoar.ac.uk/repository/71602025-05-28T16:05:33.227913Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologiafalse
dc.title.none.fl_str_mv White light interferometry to characterize the hydrogel contact lens surface
title White light interferometry to characterize the hydrogel contact lens surface
spellingShingle White light interferometry to characterize the hydrogel contact lens surface
Giraldez, Maria J.
Contact lenses
Hydrogels
Surface characterization
Surface roughness
Topography
White light optical profiling
Science & Technology
title_short White light interferometry to characterize the hydrogel contact lens surface
title_full White light interferometry to characterize the hydrogel contact lens surface
title_fullStr White light interferometry to characterize the hydrogel contact lens surface
title_full_unstemmed White light interferometry to characterize the hydrogel contact lens surface
title_sort White light interferometry to characterize the hydrogel contact lens surface
author Giraldez, Maria J.
author_facet Giraldez, Maria J.
García-Resúa, Carlos
Lira, Madalena
Oliveira, M. Elisabete
Yebra-Pimentel Vilar, Eva
author_role author
author2 García-Resúa, Carlos
Lira, Madalena
Oliveira, M. Elisabete
Yebra-Pimentel Vilar, Eva
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Giraldez, Maria J.
García-Resúa, Carlos
Lira, Madalena
Oliveira, M. Elisabete
Yebra-Pimentel Vilar, Eva
dc.subject.por.fl_str_mv Contact lenses
Hydrogels
Surface characterization
Surface roughness
Topography
White light optical profiling
Science & Technology
topic Contact lenses
Hydrogels
Surface characterization
Surface roughness
Topography
White light optical profiling
Science & Technology
description Uncorrected proof
publishDate 2010
dc.date.none.fl_str_mv 2010-05-01
2010-05-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/13775
url http://hdl.handle.net/1822/13775
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0275-5408
10.1111/j.1475-1313.2010.00712.x
20444136
http://www.ingentaconnect.com/content/bsc/opo/2010/00000030/00000003/art00009?token=00461252d45c5f3b3b47462148743b3e70557b2f2a6c4f582a2f4876753375686f4961
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv reponame:Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
instname:FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron:RCAAP
instname_str FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
instacron_str RCAAP
institution RCAAP
reponame_str Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
collection Repositórios Científicos de Acesso Aberto de Portugal (RCAAP)
repository.name.fl_str_mv Repositórios Científicos de Acesso Aberto de Portugal (RCAAP) - FCCN, serviços digitais da FCT – Fundação para a Ciência e a Tecnologia
repository.mail.fl_str_mv info@rcaap.pt
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